MUZHICHISHEN XUANYONGYOULIANGYIJIHONGSONG，JINGFENJIE、TUOZHI、SHIXIAO、ZUHECHENGXINGDENGXIANDAIGONGYIJISHUCHULIJIAGONG。 JUYOUBIANXINGXIAO、ZHONGLIANGQING、SHIYONGYUYI、ERDENGDADISHUIZHUNCELIANG。 ZHUYAOJISHUZHIBIAO CAIYONGBIAOZHUNCH8008―92YINWAHEJINDAI4J36，XIANPENGZHANGXISHU≤1.3×10-6/℃；MIJIANGEZHENZHANGYUMINGYIZHANGCHA≤±0.02mm；MIJIANGEPINGJUNZHENZHANG≤0.01mm；FENMIFENHUAZHENZHANGYUMINGYIZHANGZHICHA≤0.013mm；BIAOCHIJIBENYUFUZHUCHANGSHUJILINGDIANGAOCHA≤0.02mm；BIAOCHIZONGZHOUYUDIPINGMIANCHUIZHICEDING≤5＂；DIPINGMIANPINGZHIDU≤0.02mm；CHISHENSHIJU≤3mm；SHUZIZHUJIWEIFENMIHELIMI，FENHUAJIANGEWEI10mmHE5mm，YOUZHENGXIANGHEDAOXIANGLIANGZHONG。

MUZHICHISHEN

    XUANYONGYOULIANGYIJIHONGSONG，JINGFENJIE、TUOZHI、SHIXIAO、ZUHECHENGXINGDENGXIANDAIGONGYIJISHUCHULIJIAGONG。

    JUYOUBIANXINGXIAO、ZHONGLIANGQING、SHIYONGYUYI、ERDENGDADISHUIZHUNCELIANG。

ZHUYAOJISHUZHIBIAO

    CAIYONGBIAOZHUNCH8008―92YINWAHEJINDAI4J36，XIANPENGZHANGXISHU≤1.3×10-6/℃；MIJIANGEZHENZHANGYUMINGYIZHANGCHA≤±0.02mm；MIJIANGEPINGJUNZHENZHANG≤0.01mm；FENMIFENHUAZHENZHANGYUMINGYIZHANGZHICHA≤0.013mm；BIAOCHIJIBENYUFUZHUCHANGSHUJILINGDIANGAOCHA≤0.02mm；BIAOCHIZONGZHOUYUDIPINGMIANCHUIZHICEDING≤5＂；DIPINGMIANPINGZHIDU≤0.02mm；CHISHENSHIJU≤3mm；SHUZIZHUJIWEIFENMIHELIMI，FENHUAJIANGEWEI10mmHE5mm，YOUZHENGXIANGHEDAOXIANGLIANGZHONG。

Wood staff body

  Choosing the first-grade superior quality red pine, the staff is processed with the modern arts and crafts technologies, such as decomposing, degreasing, aging, compounding, molding, etc.

  Having less distortion, lighter weight, the staff applies to the first, second grade land surveying.

The principal technical specifications

  According to CH8008―92 invar belt 4J36 standard, the coefficient of linear expansion ≤1.3×10-6/℃；the difference between real length and nominal length per meter ≤±0.02mm；the difference of the average real length between the scale space in meter ≤±0.01mm；the difference between the scale space in decimeter ≤±0.013mm；the difference between basic constant and assistant constant and the null point difference of the staff ≤±0.02mm；the angle between the vertical axis and the bottom plane ≤5＂； the smooth degree of the bottom plane ≤±0.02mm；the degree of curve of the staff≤3mm；The staff has du scales, one is in 10mm increments and the other in 5mm increments, having two images, one is erect image, the other is inv